Thanks so much Randall. Now I can apply some power and see if it works.
John
'62 TR4
----- Original Message -----
From: "Randall" <TR3driver@ca.rr.com>
To: <triumphs@autox.team.net>
Sent: Tuesday, October 26, 2010 9:24 AM
Subject: Re: [TR] Triumph Bendix Radio
>> It has "ear com neg" written vertically on the side of
>> the can. Not
>> sure how that might relate to the terminals on the bottom.
>
> That means that the mounting tabs are also the negative terminal.
>
>> There are three spade connectors equidistantly spaced just
>> inside the outer
>> edge of the capacitor base
>
> Those are the mounting tabs, so negative.
>
>> and one longer wire connector more inboard.
>
> Which will be the positive.
>
>> With no power to the radio but the power switch "on" and the
>> polarity switch
>> set "up" all three spade connectors show a direct connection
>> to the power
>> lead and the wire connector shows a direct connection to the
>> chassis.
>
> So that is the positive ground configuration.
>
>> With
>> the polarity switch flipped "down" the three spades now show a direct
>> connection to the chassis and the wire connector shows a
>> direct connection
>> to the power lead.
>
> For negative ground.
>
> Randall
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